biweekly

• bi-weekly

From bi- +‎ week +‎ -ly. The sense referring to twice a week can be analyzed as bi- +‎ weekly.

• Audio (US):

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• enPR: bī.wēk'lē, IPA^(key): /baɪˈwiːkli/
• Rhymes: -iːk.li

biweekly (not comparable)

1. Occurring once every two weeks; fortnightly.
2. Occurring twice a week.

For maximum clarity, writing "every 2 weeks" or "twice a week" is advisable (regardless of correctness or incorrectness of "biweekly" in either sense). See also bimonthly.

• (occurring once every two weeks): fortnightly, twi-weekly
• (occurring twice a week): twice-weekly, semiweekly

biweekly (not comparable)

1. Every two weeks.
2. Twice a week (but see the Usage notes).

• (every two weeks): fortnightly
• (twice a week): twice weekly, semi-weekly

biweekly (plural biweeklies)

1. Something that is published or released once every two weeks.

   The local paper is a biweekly.

• semiweekly
• fortnightly (UK)